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各位 UL 987 30.3 关于运动部件护罩要求:9 ^1 e/ z3 y1 D( V$ D% G+ c( T
30.3 Some guards provided over moving parts are required to be of the self-restoring type – for example,* P% X* o- g3 w8 \1 h
a guard on a saw and a guard on a jointer. Other features of a guard that shall be considered include:
) o1 t/ t, X% K* K1 C6 n8 la) Removability of the guard without the use of a tool; | b) Removability for servicing and the need for replacement;
V& v3 {+ ?) ^4 e( {3 }& `c) Strength and rigidity;7 x* P3 Z4 V t
d) Completeness; and
1 _! D; m( p; f. e8 F% j) We) Creation of a risk of injury to persons, such as pinch points, material hang-ups or jams,
. p+ ^! n; h/ Yrestricted vision, or other conditions adversely affecting the ease of operation; and the necessity$ k5 B2 b1 Q% z6 R- w; N0 A9 m
for additional handling because of increased need for servicing – such as cleaning, unjamming,9 F& O: p, y [# C
and the like.% d7 N1 b5 O$ i% U. o. Y) y: U
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其中的a 怎么理解?不用工具就可以拆掉的运动部件护罩可以接受吗? |
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